521B0850 DKCFN.PD.013.FA5.02

Transcription

1 DATA SHEET Water Pumps APP General information APP0.6, APP1.0, APP1.5, APP1.8, APP2.2, APP2.5, APP3.0 and APP3.5 pumps are designed to supply low viscosity and corrosive fluids under high pressure, eg. in seawater reverse osmosis filtration applications and for high pressure salt water pumping. The pumps are based on the axial piston principle enabling a very light and compact design, and they are designed so that lubrication of the moving parts in the pumps is provided by the fluid itself. No oil lubrication is thus required. All parts included in the pumps are designed to provide long service life, i.e. long service life with a constantly high efficiency and minimum of service required. The pumps are fixed displacement pumps in which the flow is proportional to the number of revolutions of the input shaft and the pump displacement, regardless of any counter-pressure : Shaft sealing 2: Mounting flange 3: Bleeding plugs 4: Retaining ring 5: Piston/shoe 6: Valve plate 7: Swash plate 8: Cylinder barrel 9: Spring 10: Port plate 11: Connecting flange 12: Housing with bearing Benefits One of the smallest and lightest pumps on the market. Can be powered by a combustion engine provided that a special coupling is used. Generates insignificant pulsations in the pressure line. No preventive maintenance required (no periodic service like e.g. change of lubricant and wearing parts). Long service life. Danfoss guarantees 8000 hours maintenance-free operation. All parts of the pump are made of non corrosive materials eg. Duplex (SAF 2205/EN1.4462) and Super-duplex (SAF 2507/EN1.4410) stainless steel and carbon reinforced PEEK. High efficiency. 521B0850 DKCFN.PD.013.FA

2 3. Technical data Code number 180B B B B B B B B3032 APP pumps APP0.6 APP1.0 APP1.5 APP1.8 APP2.2 APP2.5 APP3.0 APP3.5 Geometric displacement cm 3 /rpm (in 3 /rpm) Flow (3000 rpm) 1) m 3 /h (gpm) Min. pressure 2) Max. pressure, cont. 3) Max. pressure, intermittent 4) bar (psi) bar (psi) bar (psi) 4 (0.24) 0.6 (2.6) (1160) 100 (1450) 6.3 (0.38) 1.0 (4.4) (1160) 100 (1450) Max. speed cont. 5) rpm Min. speed cont. rpm Power requirement at 80 bar and 3000 rpm: Weight kw (hp) kg (lb) 1.9 (2.5) 5.2 (9.7) 2.9 (3.9) 5.2 (9.7) Integrated flushing valve NO NO NO NO NO NO YES YES Flow through flushing valve at 1 bar pressure drop m 3 /h (gpm) 9.3 (0.56) 1.5 (6.6) (1160) 100 (1450) 4.5 (6) 8,6 (17) 10 (0.61) 1.7 (7.5) (1160) 100 (1450) 4.8 (6.3) 8.6 (17.0) 12.5 (0.76) 2.1 (9.2) (1160) 100 (1450) 6.0 (7.9) 8.6 (17.0) 15.3 (0.93) 2.6 (11.4) (1160) 100 (1450) ) Typical average flow at 80 bar. 4) Intermittent pressure is acceptable for less than 2) For lower pressure, please contact Danfoss RO Sales Organization. 10 seconds per minute. 3) For higher pressure, please contact Danfoss RO Sales Organzation. 5) For speeds above 3000 rpm the pump must be boosted at a pressure of 2-5 bar ( psi). 7.2 (9.6) 8.6 (17) 17.7 (1.08) 3.0 (13.2) (1160) 100 (1450) 8.4 (11.3) 8.6 (17.0) 0.8 (3.7 ) 20.5 (1.25) 3.5 (15.4) (1160) 100 (1450) 9.8 (13.1) 8.6 (17) 0.8 (3.7 ) 4. Flow at different rpm Using the diagram shown below, it is easy to select the pump which fits the application best if the flow required and the rotation speed (rpm) of the pump are known. 4 3,5 APP3.5 3 APP3.0 2,5 APP2.5 APP2.2 m 3 /h 2 1,5 1 0,5 APP1.8 APP1.5 APP1.0 APP rpm Furthermore, this diagram shows that the flow can be changed by changing the rotation speed of the pump. The flow/rpm ratio is constant, and the desired flow can be obtained by changing the rotation speed to a corresponding value. Thus, the required rpm can be determined as: Desired flow Rated rpm Required rpm = Rated flow 2 DKCFN.PD.013.FA B0850

3 5. Power requirements Pump model Flow Pressure rpm Calc. factor 60 bar 70 bar 80 bar l/min m 3 /h gpm 870 psi 1015 psi 1160 psi APP kw 1.61 kw 1.84 kw APP kw 1.94 kw 2.21 kw APP kw 2.49 kw 2.85 kw APP kw 2.99 kw 3.42 kw APP kw 3.75 kw 4.29 kw APP kw 4.51 kw 5.15 kw APP kw 4.00 kw 4.57 kw APP kw 4.81 kw 5.49 kw APP kw 5.00 kw 5.71 kw APP kw 6.01 kw 6.87 kw APP kw 5.92 kw 6.77 kw APP kw 7.2 kw 8.2 kw APP kw 8.4 kw 9.6 kw The power requirements can be determined using one of the following guiding equations: l/min bar 16.7 m 3 /h bar 0.26 gpm psi Required power = [kw] or [kw] or [kw] Calc. factor Calc. factor Calc. factor 6. Inlet pressure Water supply to the pump is either made from a tank placed above the pump or directly from a feed pump. The pressure at the pump inlet (I) must be in the range: bar ( psi). 7. Temperature and corrosion 7.1 Operation: Fluid temperature: +3 C to +50 C (+37.4 F to 122 F) - dependent on the NaCl concentration Ambient temperature: +3 C to +50 C (+37.4 F to 122 F) 1 hp = 0.75 kw 1 kw = 1.34 hp 1 gpm = 3.79 l/min 1 l/min = 0.26 gpm 1 m 3 /h = 4.40 gpm 1 gpm = 0.23 m 3 /h The chart below illustrates the corrosive resistance of different types of stainless steel related to NaCl concentration and temperature. All critical parts of the APP water pump is made of SAF If the water pump is operated at high salinity, always flush the water pump with fresh water at operation stop in order to minimise the risk of crevice corrosion. 904L / SAF 2205 NaCl vs. temperature 7.2 Storage: Storage temperature: -40 C to +70 C (+37.4 F to 122 F) provided that the pump is drained of fluid and stored plugged. Antefreeze protection is required at temperatures below 2 C. Danfoss recommends using Dowcal N from Dow Chemical Company or Chillsafe mono propylene glycol from Arco Chemical Company. 521B0850 DKCFN.PD.013.FA5.02 3

4 8. Noise level The table indicates the approximate noise level in db(a) measured at a distance of 1 m from the pump in a reverberation room. Type 60 bar (870 psi) 1500 rpm 60 bar (870 psi) 3000 rpm APP APP APP APP APP APP APP APP Generally, noise will be reduced if speed is reduced and vice versa. Use flexible hoses in order to minimize vibrations and noise. Since the pump is typically mounted on a bell housing or frame, the noise level can only be determined for the complete unit (system). It is therefore very important that the pump is mounted correctly on a frame with dampers to minimize vibrations and noise. The noise level is influenced by: The speed of the pump, high rpm create more noise than low rpm Rigid mounting of the pump generates more noise than flexible mounting Pipe mounting direct to the pump increases the noise level compared to a flexible hose 9. Filtration As water has very low viscosity, the APP pumps have been designed with very narrow clearance in order to control internal leakage rates and improve component performance. Therefore it is important that the inlet water is filtered properly to minimize the wear of the pump. The main filter must have a filtration efficiency of 99.98% at 10 µm. We recommend that you use precision depth filter cartridges rated 10µm abs. ß10>5000 (equivalent to a filtration efficiency of 99.98%). Bag filters and string wound filter cartridges typically have only 90% filtration efficiency. This means that for each 100,000 particles reaching the filter, 10,000 particles pass through it compared to only 20 particles in a filter with an efficiency of 99.98%. For more information on the importance of proper filtration, please consult our publication Filtration (code number 521B0861), which also will provide you with an explanation of filtration definitions and a guidance on how to select the right filter. 4 DKCFN.PD.013.FA B0850

5 10. Dimensions 10.1 Pump Description APP0.6 and APP1.0 APP1.5, APP1.8, APP2.2 and APP2.5, APP3.0 and APP3.5 A Port position, mm (in) 15.9 (0.63) 18.8 (0.74) 18.8 (0.74) B Port position, mm (in) 15.9 (0.63) 21.0 (0.83) 21.0 (0.83) C mm (in) Ø 88 (3.5) Ø 105 (4.1) Ø 105 (4.1) D mm (in) 131 (5.2) 166 (6.5) 166 (6.5) E Parallel key, DIN 6885, mm (in) ( ) ( ) ( ) F Bleeding M6, Hexagon AF = 5 mm M6, Hexagon AF = 5 mm M6, Hexagon AF = 5 mm I Inlet connection BSP G½ ; 15 (0.59) deep BSP G¾ ; 15 (0.59) deep BSP G¾ ; 15 (0.59) deep O Outlet connection BSP G½ ; 15 (0.59) deep BSP G½ ; 17 (0.67) deep BSP G¾ ; 17 (0.67) deep Pump mounting flange SAE A 2 SAE A 2 SAE A 2 521B0850 DKCFN.PD.013.FA5.02 5

6 10.2 Complete unit Pump A (mm) B (mm) C (mm) D (mm) E (mm) F (mm) G (mm) H (mm) IEC Electric motor APP kw, FPA 90S-2 APP kw, FPA 90L-2 APP kw, FPA 100L-2 APP kw, FPA 112M-2 APP kw, FPA 132S1-2 APP kw, FPA 132S2-2 APP kw, FPA 160M1-2 APP kw, FPA 160M Installation 11.1 Mounting The figure below illustrates how to mount the pump and connect it to electric motor/combustion engine. A: Flexible coupling B: Bell housing C: Motor shaft If alternative mounting is required, please contact Danfoss Sales Organization for further information. To ensure easy mounting of the flexible coupling without using tools, the tolerances must be dimensioned accordingly. Note: Any axial and/or radial loads on the shaft must be avoided, see User guide (521B0888). Min. 5 mm A B C The pump should be connected to the rest of the plant with a flexible hoses. 6 DKCFN.PD.013.FA B0850

7 11.2 Open-ended systems with water supply from tank In order to eliminate the risk of cavitation, a positive inlet pressure should always be maintained by observing the following guidelines: 1. Place the tank (1) above pump inlet (water level in tank should always be above the pump). 2. Place a filter (2) in the water supply line in front of the tank. 3. Dimension the inlet line (3) with minimum pressure drop (large internal diameter, minimum length of pipe, avoid bends and fittings with small internal diameter) Open-ended system with direct water supply In order to eliminate the risk of cavitation, a positive inlet pressure is always to be maintained at min. 0.5 bar (7 3 psi) and max. 5 bar (72.5 psi). 1. Place the filter (1) in the water supply line in front of the pump. 2. Place a monitoring pressure switch (2) set at min. 1 bar (14.5 psi) between filter and pump inlet. The monitoring switch must stop the pump at pressures lower than 1 bar. (14 5 psi) At speeds above 3000 rpm - use 2 bar (29 psi) as set point RO system with APP pump 1. For easy system bleeding and flushing, apply a bypass non-return valve (1) in parallel with the APP pump. The valve is integrated in APP3.0 and APP Place an inlet filter (2) in front of the APP pump (3). Please consult section 9, Filtration for guidance on how to select the right filter. Throughly clean pipes and flush system prior to start-up. 3. Place a monitoring pressure switch (6) set at min. 1 bar between filter and pump inlet. The monitoring switch must stop the pump at pressures lower than 1 bar (14.5 psi). At 3000 rpm - use 2 bar (29 psi) as set point. 4. Dimension the inlet line to obtain minimum pressure loss (large flow, minimum pipe length, minimum number of bends/ connections, and fittings with small pressure losses). 5. In order to eliminate the risk of damage and cavitation, a positive pressure at the inlet (4) is always to be maintained at min. 0.5 bar (7.3 psi) and max. 5 bar (72.5 psi). At speeds above 3000 rpm the pressure at the inlet of the water pump must be min. 2 bar (29 psi). 6. Use flexible hoses (5) to minimize vibrations and noise. 7. Install a safety valve (7) in order to avoid system damage as the Danfoss APP pump creates pressure and flow immediately after start-up, regardless of any counter-pressure. Feed APP 5 7 Permeate 6 M Brine 521B0850 DKCFN.PD.013.FA5.02 7

8 12. Service Provided that the pump has been running according to the Danfoss specifications on pre-filtration, pressure, and rotation speed, Danfoss guarantees minimum 8000 hours operation, however max. 18 months from date of sale. To prevent a total and disastrous breakdown, Danfoss recommends a pump inspection after max hours at which any worn parts must be replaced. Note: It is always recommended to replace pistons and shaft sealing if another service-free period is to be obtained. If the pistons are not replaced, more frequent inspection is recommended. The APP pump is made of duplex/super duplex materials with fine corrosion properties. However, it is always recommended to flush the pump when the system is shut down. The shaft sealing in the APP pump is made of AISI 316. At high TDS and high water temperature, the service life of the shaft sealing will be reduced. For these applications it is recommended to replace the shaft sealing after approx hours operation Periodic maintenance Water acts as lubricant in the APP. Thus there is no oil in the pump. By operation below the curve for SAF 2507 in the figure in section 7.1, no parts are expected to be replaced within the first 8000 hours of operation Repair In case of irregular function of the APP, please contact the Danfoss RO Solutions Sales Organisation. 8 DKCFN.PD.013.FA B0850

9 DATA SHEET Water Pumps APP General information APP5.1, APP6.5, APP7.2, APP8.2 and APP10.2 pumps are designed to supply low viscosity and corrosive fluids under high pressure, eg. in seawater reverse osmosis filtration applications and for high pressure salt water pumping. The APP pumps are based on the axial piston principle enabling a very light and compact design, and they are designed so that lubrication of the moving parts in the pumps is provided by the fluid itself. No oil lubrication is thus required. All parts included in the APP pumps are designed to provide long service life, i.e. long service life with a constantly high efficiency and minimum of service required. The pumps are fixed displacement pumps in which the flow is proportional to the number of revolutions of the input shaft and the pump displacement, regardless of any counter-pressure : Shaft sealing 2: Mounting flange 3: Bleeding plugs 4: Retaining ring 5: Piston/shoe 6: Valve plate 7: Swash plate 8: Cylinder barrel 9: Spring 10: Port plate 11: Connecting flange 12: Housing with bearing Benefits One of the smallest and lightest pumps on the market. Can be powered by a combustion engine provided that a special coupling is used. Generates insignificant pulsations in the pressure line. No preventive maintenance required (no periodic service like e.g. change of lubricant and wearing parts). Long service life. Danfoss guarantees 8000 hours maintenance-free operation. All parts of the pump are made of non-corrosive materials eg. duplex (SAF 2205/EN1.4462) and superduplex (SAF 2507/EN1.4410) stainless steel and carbon reinforced PEEK. High efficiency. 521B0851 DKCFN.PD.013.FB

10 3. Technical data Code number 180B B B B B3010 APP pumps APP5.1 APP6.5 APP7.2 APP8.2 APP10.2 Geometric displacement cm 3 /rpm (in 3 /rpm) 50 (3.05) 63 (3.84) 70 (4.27) 80 (4.88) 100 (6.10) Flow (1800 rpm) 1) m 3 /h (gpm) 5.0 (22.0) 6.4 (28.2) 7.2 (31.7) 8.2 (36.1) 10.2 (44.9) Min. pressure 2) bar (psi) 20 (290) 20 (290) 20 (290) 20 (290) 20 (290) Max. pressure, cont. 3) bar (psi) 80 (1160) 80 (1160) 80 (1160) 80 (1160) 80 (1160) Max. pressure, intermittent 4) bar (psi) 100 (1450) 100 (1450) 100 (1450) 100 (1450) 100 (1450) Max. speed cont. 5) rpm Min. speed cont. rpm Power requirement at 80 bar and 1800 rpm: kw (hp) 13.7 (18.4) 17.3 (23.2) 19.2 (25.7) 21.7 (29.1) 27.4 (36.7) Weight kg (lb) 30 (66) 30 (66) 30 (66) 30 (66) 30 (66) 1) Typical average flow at 80 bar. 2) For lower pressure, please contact Danfoss RO Solutions Sales Organization. 3) For higher pressure, please contact Danfoss RO Solutions Sales Organzation. 4) Intermittent pressure is acceptable for less than 10 seconds per minute. 5) For speeds above 1500 rpm the APP pump must be boosted at a pressure of 2-5 bar ( psi). 4. Flow at different rpm Using the diagram shown below, it is easy to select the APP pump which fits the application best if the flow required and the rotation speed (rpm) of the pump are known. m 3 /h 12,00 10,00 8,00 6,00 4,00 APP10.2 APP8.2 APP7.2 APP6.5 APP5.1 2,00 0, rpm Furthermore, this diagram shows that the flow can be changed by changing the rotation speed of the pump. The flow/rpm ratio is constant, and the desired flow can be obtained by changing the rotation speed to a corresponding value. Thus, the required rpm can be determined as: Desired flow Rated rpm Required rpm = Rated flow 5. Power requirements Pump model Flow Pressure rpm Calc. factor 60 bar 70 bar 80 bar l/min m 3 /h gpm 870 psi 1015 psi 1160 psi APP kw 9.7 kw 11.1 kw APP kw 11.7 kw 13.4 kw APP kw 12.3 kw 14.0 kw APP kw 14.7 kw 16.8 kw APP kw 13.5 kw 15.5 kw APP kw 16.3 kw 18.6 kw APP kw 14.8 kw 16.9 kw APP kw 17.8 kw 20.3 kw APP kw 18.7 kw 21.4 kw APP kw 22.5 kw 25.7 kw The power requirements can be determined using one of the following guiding equations: Required power = l/min bar [kw] or 16.7 m 3 /h bar [kw] or 0.26 gpm psi [kw] Calc. factor Calc. factor Calc. factor 1 hp = 0.75 kw 1 kw = 1.34 hp 1 gpm = 3.79 l/min 1 l/min = 0.26 gpm 1 m 3 /h = 4.40 gpm 1 gpm = 0.23 m 3 /h 2 DKCFN.PD.013.FB B0851

11 6. Inlet pressure Water supply to the APP pump is either made from a tank placed above the pump or directly from a feed pump. The pressure at the pump inlet (I) must be in the range: bar ( psi). 7. Temperature and corrosion 7.1 Operation: Fluid temperature: +3 C to +50 C (+37.4 F to 122 F) - dependent on the NaCl concentration Ambient temperature: +3 C to +50 C (+37.4 F to 122 F) The chart below illustrates the corrosive resistance of different types of stainless steel related to NaCl concentration and temperature. All critical parts of the APP pump are made of SAF If the APP pump is operated at high salinity, always flush the pump with fresh water at operation stop in order to minimise the risk of crevice corrosion. 904L / SAF 2205 NaCl vs. temperature 7.2 Storage: Storage temperature: -40 C to +70 C (+37.4 F to 122 F) provided that the APP pump is drained of fluid and stored plugged. Antefreeze protection is required at temperatures below 2 C. Danfoss recommends using Dowcal N from Dow Chemical Company or Chillsafe mono propylene glycol from Arco Chemical Company. 8. Noise level The chart indicates the noise level in db(a) measured at a distance of 1 m from the APP pump in a reverberation room. Type 60 bar (580 psi) 1500 rpm 60 bar (580 psi) 1800 rpm 80 bar (2000 psi) 1500 rpm 80 bar (2000 psi) 1800 rpm APP APP APP APP APP Generally, noise will be reduced if speed is reduced and vice versa. Use flexible hoses in order to minimize vibrations and noise. Since the APP pump is typically mounted on a bell housing or frame, the noise level can only be determined for the complete unit (system). It is therefore very important that the APP pump is mounted correctly on a frame with vibration absorber to minimize vibrations and noise. The noise level is influenced by: The speed of the pump, high rpm create more noise than low rpm Rigid mounting of the pump generates more noise than flexible mounting Pipe mounting direct to the pump increases the noise level compared to a flexible hose 9. Filtration As water has very low viscosity, the APP pumps have been designed with very narrow clearance in order to control internal leakage rates and improve component performance. Therefore it is important that the inlet water is filtered properly to minimize the wear of the pump. The main filter must have a filtration efficiency of 99.98% at 10 µm. We recommend that you use precision depth filter cartridges rated 10µm abs. ß10>5000 (equivalent to a filtration efficiency of 99.98%). Bag filters and string wound filter cartridges typically have only 90% filtration efficiency. This means that for each 100,000 particles reaching the filter, 10,000 particles pass through it compared to only 20 particles in a filter with an efficiency of 99.98%. For more information on the importance of proper filtration, please consult our publication Filtration (code number 521B0861), 521B0851 DKCFN.PD.013.FB3.02 3

12 which also will provide you with an explanation of filtration definitions and a guidance on how to select the right filter. 10. Dimensions 10.1 APP pump Description APP5.1 and APP10.2 C Bleeding M6, Hexagon AF = 5 mm D Parallel key, DIN 6885, mm (in) ( ) I Inlet connection M42 x 1½ mm; 13 mm (0.51 in) deep O Outlet connection M42 x 1½ mm; 13 mm (0.51 in) deep Pump mounting flange 125 A Complete unit Pump A (mm) B (mm) C (mm) D (mm) E (mm) F (mm) IEC Electric motor APP kw, FPC 160 M-4 APP kw, FPC 160 L-4 APP kw, FPC 160 L-4 APP kw, FPC 180 M-4 APP kw, FPC 180 L-4 APP kw, FPC 200 L-4 For inlet and outlet connections data, see Accessories catalogue (521B0903). 4 DKCFN.PD.013.FB B0851

13 11. Installation 11.1 Mounting The figure below illustrates how to mount the APP pump and connect it to an electric motor/combustion engine. A: Flexible coupling B: Bell housing C: Motor shaft If alternative mounting is required, please contact Danfoss Sales Organization for further information. To ensure easy mounting of the flexible coupling without using tools, the tolerances must be dimensioned accordingly. Note: Any axial and/or radial loads on the shaft must be avoided, see User guide (521B0888). Min. 3 mm A B C The APP pump should be connected to the rest of the plant with a flexible hoses Open-ended systems with water supply from tank In order to eliminate the risk of cavitation, a positive inlet pressure should always be maintained by observing the following guidelines: 1. Place the tank (1) above the APP pump inlet (water level in tank should always be above the pump). 2. Place a filter (2) in the water supply line in front of the tank. 3. Dimension the inlet line (3) with minimum pressure drop (large internal diameter, minimum length of pipe, avoid bends and fittings with small internal diameter) Open-ended system with direct water supply In order to eliminate the risk of cavitation, a positive inlet pressure is always to be maintained at min. 0.5 bar (7 3 psi) and max. 5 bar (72.5 psi). 1. Place the filter (1) in the water supply line in front of the APP pump. 2. Place a monitoring pressure switch (2) set at min. 1 bar (14.5 psi) between filter and pump inlet. The monitoring switch must stop the pump at pressures lower than 1 bar (14.5 psi) At speeds above 1500 rpm - use 2 bar (29 psi) as set point. 521B0851 DKCFN.PD.013.FB3.02 5

14 11.4 RO system with APP pump 1. For easy system bleeding and flushing, apply a bypass non-return valve (1) in parallel with the APP pump. 2. Place an inlet filter (2) in front of the APP pump (3). Please consult section 9, Filtration for guidance on how to select the right filter. Throughly clean pipes and flush system prior to start-up. 3. Place a monitoring pressure switch (6) set at min. 1 bar between filter and pump inlet. The monitoring switch must stop the pump at pressures lower than 1 bar (14.5 psi). Above 1500 rpm - use 2 bar (29 psi) as set point. 4. Dimension the inlet line to obtain minimum pressure loss (large flow, minimum pipe length, minimum number of bends/ connections, and fittings with small pressure losses). 5. In order to eliminate the risk of damage and cavitation, a positive pressure at the inlet (4) is always to be maintained at min. 0.5 bar (7.3 psi) and max. 5 bar (72.5 psi). At speeds above 1500 rpm the pressure at the inlet of the APP pump must be min. 2 bar (29 psi). 6. Use flexible hoses (5) to minimize vibrations and noise. 7. Install a safety valve (7) in order to avoid system damage as the APP pump creates pressure and flow immediately after startup, regardless of any counter-pressure. Feed APP 5 7 Permeate 6 M Brine 12. Service Provided that the APP pump has been running according to the Danfoss specifications on pre-filtration, pressure, and rotation speed, Danfoss guarantees minimum 8000 hours operation, however max. 18 months from date of sale. To prevent a total and disastrous breakdown, Danfoss recommends a pump inspection after max hours at which any worn parts must be replaced. Note: It is always recommended to replace pistons and shaft sealing if another service-free period is to be obtained. If the pistons are not replaced, more frequent inspection is recommended. The APP pump is made of duplex/super duplex materials with fine corrosion properties. However, it is always recommended to flush the APP pump when the system is shut down. The shaft sealing in the APP pump is made of Hasteloy C. At high TDS and high water temperature, the service life of the shaft sealing will be reduced. For these applications it is recommended to replace the shaft sealing after approx hours operation Periodic maintenance Water acts as lubricant in the APP pump. Thus there is no oil in the pump. By operation below the curve for SAF 2507 in the figure in section 7.1, no parts are expected to be replaced within the first 8000 hours of operation Repair In case of irregular function of the APP pump, please contact the Danfoss RO Solutions Sales Organisation. 6 DKCFN.PD.013.FB B0851

15 DATA SHEET Water Pumps APP General information APP21-30 pumps are designed to supply low viscosity and corrosive fluids under high pressure, eg. in seawater reverse osmosis filtration applications and for high pressure salt water pumping. The pumps are based on the axial piston principle enabling a very light and compact design, and they are designed so that the lubrication of the moving parts in the pumps is provided by the fluid itself. No oil lubrication is thus required. The pump has an integrated flushing valve that allows the salt water to flow from inlet to the outlet, when the pump is not running. All parts included in the pumps are designed to provide long service life, i.e. long service life with a constantly high efficiency and minimum service required. The pumps are fixed displacement pumps in which the flow is proportional to the number of revolutions of the input shaft and the pump displacement. 1: Shaft sealing 2: Mounting and port flange 3: Bleeding plugs 4: Retaining ring 5: Piston/shoe 6: Valve/thrust plate 7: Swash plate 8: Cylinder barrel 9: Springs 10: Port plate 11: Flushing valve 12: Housing with bearing 13: Bolts for bell housing 14: Drain plug 2. Benefits One of the smallest and lightest pumps on the market. Can be powered by a combustion engine provided that a special coupling is used. Long service life / No preventive maintenance required in the warranty period. Generates insignificant pulsations in the pressure line. No oil lubricant. Integrated flushing valve All parts of the pump are made of non-corrosive materials eg. Duplex (SAF 2205/EN1.4462/UNS S31803-S32205) and Super-duplex (SAF 2507/EN1.4410/UNS S32750) stainless steel and carbon reinforced PEEK High efficiency 521B0852 DKCFN.PD.013.FC

16 3. Technical data Code number 180B B B B3060 APP pumps APP21 APP24 APP26 APP30 Geometric displacement cm 3 /rpm (in 3 /rpm) 308 (18,8) 362 (22,1) 389 (23,7) 444,0 (27,1) Flow (1200 rpm) at 60 bar m 3 /h (gpm) 20,8 (91,5) 24,77 (108,7) 26,6 (117,1) 30,7 (135,1) Min. outlet pressure bar (psi) 40 (580) 40 (580) 40 (580) 40,0 (580) Max. outlet pressure bar (psi) 80 (1160) 80 (1160) 80 (1160) 80,0 (1160) Min. inlet pressure cont. 2 (29) 2 (29) 2 (29) 3 (44) Max inlet pressure cont. bar (psi) 6 (87) 6 (87) 6 (87) 6 (87) Max inlet pressure peak bar (psi) 10 (145) 10 (145) 10 (145) 10 (145) Maximum speed rpm Minimum speed rpm Power requirement at max. speed and 80 bar (1160 psi): kw(hp) 55 (73,7) 65 (87,1) 70 (93,8) 81 (108,6) Torque Nm (lbf-ft) 436 (321) 512 (377) 550 (405) 642 (473) Weight kg (lb) 105 (231,5) 105 (231,5) 105 (231,5) 105 (231,5) Flushing valve Kv value ( p = 1 bar) m 3 /h (gpm) 14,4 (63,4) 14,4 (63,4) 14,4 (63,4) 14,4 (63,4) 4. Flow at different rpm When using the diagram shown below, it is easy to select the pump which fits the application best if the flow required and the rotation speed (rpm) of the pump are known APP 30 APP APP 24 m³/h 20 APP rpm Furthermore, this diagram shows that the flow can be changed by changing the rotation speed of the pump. The flow/rpm ratio is constant, and the desired flow can be obtained by changing the rotation speed to a corresponding value. Thus, the required rpm can be determined as: Required rpm = Desired flow 1200 rpm Rated flow 2 DKCFN.PD.013.FC B0852

17 5. Temperature and corrosion 5.1 Operation: Fluid temperature: +3 C to +40 C (+37.4 F to +104 F) - dependent on the NaCl concentration Ambient temperature: +3 C to +50 C (+37.4 F to +122 F) The chart below illustrates the corrosive resistance of different types of stainless steel related to NaCl concentration and temperature. The APP water pump is made of SAF 2507 and SAF If the water pump is operated above the SAF 2507 line, always flush the the water pump with fresh water at operation stop in order to minimise the risk of crevice corrosion. 904L / SAF 2205 NaCl vs. temperature 5.2 Storage: Storage temperature: -40 C to +70 C (-40 F to 158 F) provided that the pump is drained of fluid and stored plugged. Antifreeze protection is required at temperatures below 2 C. Danfoss recommends using Dowcal N from Dow Chemical Company or Chillsafe mono propylene glycol from Arco Chemical Company. 6. Noise level The noise from the APP21-30 is typically 84 db(a) at 60 bar / 1200 rpm. Generally, noise will be reduced if speed is reduced and vice versa. Use flexible hoses in order to minimize vibrations and noise. Since the pump typically is mounted on a bell housing or frame, the noise level can only be determined for the complete unit (system). It is therefore very important that the pump is mounted correctly on a frame with vibration absorber to minimize vibrations and noise. The noise level is influenced by: The speed of the pump, high rpm create more noise than low rpm Rigid mounting of the pump generates more noise than flexible mounting Pipe mounting direct to the pump increases the noise level compared to a flexible hose 7. Filtration As water has very low viscosity, the APP pumps have been designed with very narrow clearance in order to control internal leakage rates and improve component performance. Therefore it is important that the inlet water is filtered properly to minimize the wear of the pump. The main filter must have a filtration efficiency of 99.98% at 10 µm. We recommend that you use precision depth filter cartridges rated 10µm abs. ß10>5000 (equivalent to a filtration efficiency of 99.98%). Bag filters and string wound filter cartridges typically have only 90% filtration efficiency. This means that for each 100,000 particles reaching the filter, 10,000 particles pass through it compared to only 20 particles in a filter with an efficiency of 99.98%. For more information on the importance of proper filtration, please consult our publication Filtration (code number 521B0861), which also will provide you with an explanation of filtration definitions and a guidance on how to select the right filter. 521B0852 DKCFN.PD.013.FC3.02 3

18 8. Dimensions APP 30: 357 (14,05) APP 21-26: 351 (13,82) Description APP21 - APP30 Accessories Type Code number E Parallel key, DIN 6885, mm (in) ( ) 3 inlet hose kit 2 m / 79 F Bleeding G ¼, Hexagon AF = 8 mm Non-return valve (outlet) I Inlet port M60 x 1.5; depth 24 mm O Outlet port M60 x 1.5; depth 24 mm Pump mounting flange 180 B 4 3 Victaulic 2½ Victaulic (OD 73.1 mm) 180Z H0050 For more details on the accessories, please consult our publication Hoses and hose fittings (code number 521B0909). 9. Dimensions, complete unit Accessories APP 30: 357mm APP 21-26: 351mm APP 30: 310mm APP 21-26: 304mm IEC 315: 295mm IEC : 265mm E D F Accessories 4 DKCFN.PD.013.FC B0852

19 Pump A (mm) B (mm) C (mm) D (mm) E (mm) F (mm) IEC Electric motor APP kw, IEC 250 M-4 APP kw, IEC 280 S-4 APP kw, IEC 280 M-4 APP kW, IEC 315 M-4 Note: Code numbers 180B3051, 180B3054, 180B3056 and 180B3060 do not include electric motor, bell housing and fittings. 10. Installation 10.1 Mounting The figure below illustrates how to mount the pump and connect it to the electric motor/combustion engine. A: Flexible coupling B: Bell housing C: Motor shaft If alternative mounting is required, please contact Danfoss RO Sales Organization for further information. To ensure easy mounting of the flexible coupling without using tools, the tolerances must be dimensioned accordingly. Note: Any axial and radial loads on the pump shaft must be avoided. A B C 10.2 Open-ended system with direct water supply In order to eliminate the risk of cavitation, a positive inlet pressure is always to be maintained at min. 2 bar (29 psi) for APP21-26, 3 bar (44 psi) for APP 30 and max. 6 bar (72.5 psi). 1. Place the filter (1) in the water supply line in front of the pump. 2. Place a monitoring pressure switch (2) set at min. inlet pressure between filter and pump inlet. The monitoring switch must stop the pump at pressures lower than min. inlet pressure. 3. Install a safety valve (3) in order to avoid system or pump damage in case the pump stops momentarilly B0852 DKCFN.PD.013.FC3.02 5

20 10.3 RO system with APP pump 1. For easy system bleeding and flushing, a bypass non-return valve (1) is integrated in the APP pump. 2. Place inlet filter (2) in front of the APP pump (3). Please consult section 7, Filtration for guidance on how to select the right filter. Throughly clean pipes and flush system prior to start-up. 3. Place a monitoring pressure switch (6) set at min. inlet pressure between filter and pump inlet. The monitoring switch must stop the pump at pressures lower than min. inlet pressure. 4. Dimension the inlet line to obtain minimum pressure loss (large flow, minimum pipe length, minimum number of bends/ connections, and fittings with small pressure losses). 5. In order to eliminate the risk of damage and cavitation, a positive pressure at the inlet (4) is always to be maintained at min. inlet pressure and max. inlet pressure. Recommend to install safety valve (7) in order to avoid high pressure peaks. 6. Install a non-return valve (8) in outlet in order to avoid backspin of the pump. The volume of water in the membrane vessel works as an accumulator and will send flow backwards in case the pump stops momentarilly. 7. Use flexible hoses (5) to minimize vibrations and noise. 8. Install a safety valve (9) in order to avoid system damage as the Danfoss APP pump creates pressure and flow immediately after start-up, regardless of any counter-pressure. Feed Media filter M Permeate Brine 11. Service and warranty Danfoss APP pumps are designed for long operation, low maintenance and reduced lifecycle costs. Provided that the pump has been running according to the Danfoss specifications, Danfoss guarantees hours service-free operation, however, max 18 months from date of production. If Danfoss recommendations concerning system-design are not followed, it will strongly influence the life of the APP pumps. Maintenance: After hours of operation it is strongly recommended to inspect the pump and change any worn parts, e.g. pistons and shaft seal. This is done in order to prevent a potential breakdown of the pump. If the parts are not replaced, more frequent inspection is recommended according to our guidelines. Standstill: The APP pumps are made of duplex/super duplex materials with excellent corrosion properties. It is however, always recommended to flush the pump with freshwater when the system is shut down Repair In case of irregular function of the APP, please contact the Danfoss RO Solutions Sales Organisation. 6 DKCFN.PD.013.FC B0852